[TowerTalk] UST HDX555 motor drive

[K7LXC at aol.com]

In a message dated 4/7/2009 7:26:48 P.M. Pacific Daylight Time,  
n9lah at comcast.net writes:

>  I have an HDX-555 tower with the motor drive for lifting. I  was working 
on the coax recently and wanted to put the tower in the fully  extended 
position the motor ran very very slow and just hummed before it  tripped 
the circuit. I reset the breaker and tried to bring the tower  down. That 
worked just fine. As the tower came to a stop I tried to raise  it again 
and it went up just fine. I waited a couple of seconds and tried  the up 
direction again and it tripped the circuit.Is it possible that the  
starting capacitor is getting weak and can only energize the motor with  
help from gravity when coming down and that it will then go up as the  
motor has been energized? Maybe being in the outside environment, the  
contacts between motor and capacitor need to be cleaned  up???


        I've never heard of a motor  failing in the very intermittent amateur 
duty so I'm thinking it's your wire  size and voltage drop. Try a bigger 
extension cord and see what happens. Of  course going down is much easier with 
gravity on your side. 
 
Cheers,
Steve    K7LXC
TOWER TECH 
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